Circuit triggered by intense pulsed light

Abstract

The utility model relates to the field of intense pulsed light instruments, and provides an intense pulsed light triggered circuit, which comprises an MCU (Microprogrammed Control Unit) control unit comprising a first port, a second port and a third port; wherein the first port is electrically connected with the PWM chopping boost unit, the electrolytic capacitor energy storage unit, the energy storage capacitor voltage sampling unit and the trigger triggering unit, the PWM chopping boost unit is connected with the voltage input unit, and the PWM chopping boost unit is electrically connected with the electrolytic capacitor energy storage unit; the electrolytic capacitor energy storage unit is respectively connected with the energy storage capacitor voltage sampling unit, the series voltage stabilization unit and the xenon lamp, and the energy storage capacitor voltage sampling unit is also electrically connected with the second port; the third port is electrically connected with the trigger triggering unit, the trigger triggering unit is electrically connected with the negative end of the xenon lamp through the trigger voltage strengthening unit, and the trigger electrode of the xenon lamp is further electrically connected with the voltage transformation end of the trigger triggering unit.

Description

Technical Field

[0001] This utility model relates to the field of home hair removal devices (intense pulsed light therapy devices), specifically a circuit for triggering intense pulsed light. Background Technology

[0002] As people's living standards improve, more and more people are pursuing beauty enhancements, resulting in a high market share for home beauty devices, especially home hair removal devices. Most hair removal devices on the market use xenon lamps, but there are many manufacturers of xenon lamps, and the parameters of xenon lamps from different manufacturers vary significantly. Even different batches of xenon lamps from the same manufacturer may have errors. Furthermore, the control and triggering circuits of most xenon lamps directly apply the voltage of the energy storage capacitor to both ends of the xenon lamp (e.g., ...). Figure 3 The voltage difference between the two ends is only the withstand voltage difference of the electrolytic capacitor. Furthermore, due to the industry's technical requirements for the withstand voltage of the electrolytic capacitor, some xenon lamps installed in the designed circuit cannot trigger the flash. Utility Model Content

[0003] This invention proposes a circuit for triggering strong pulse light, which is used to solve the problem that some xenon lamps installed in a designed circuit cannot trigger the flash.

[0004] This utility model proposes a circuit for triggering by a strong pulsed light, comprising:

[0005] The MCU control unit includes a first port, a second port, and a third port;

[0006] The first port is electrically connected to the PWM chopper boost unit, the electrolytic capacitor energy storage unit, the energy storage capacitor voltage sampling unit, and the trigger unit, respectively. The PWM chopper boost unit is connected to the voltage input unit, and the PWM chopper boost unit is electrically connected to the electrolytic capacitor energy storage unit.

[0007] The electrolytic capacitor energy storage unit is connected to the energy storage capacitor voltage sampling unit, the series voltage stabilizing unit and the xenon lamp respectively. The energy storage capacitor voltage sampling unit is also electrically connected to the second port P11.

[0008] The third port P12 is electrically connected to the trigger unit, which is electrically connected to the negative terminal of the xenon lamp through the trigger voltage enhancement unit. The trigger electrode of the xenon lamp is also electrically connected to the transformer terminal of the trigger unit.

[0009] Preferably, the PWM chopper boost unit consists of a PWM signal chip, a first MOSFET, a current sensing resistor, a first boost transformer, a first rectifier diode, and a second rectifier diode;

[0010] The input port of the PWM signal chip is connected to the first port, the output port of the PWM signal chip is connected to the gate of the first MOS transistor, the source of the first MOS transistor is connected to one output terminal and the second port of the first boost transformer through a current sensing resistor, and the drain of the first MOS transistor is connected to one input terminal of the first boost transformer.

[0011] The other input terminal of the first step-up transformer is connected to the power supply voltage input unit;

[0012] The other output terminal of the first step-up transformer is connected to the second step-up transformer, and the two ends of the second step-up transformer are respectively connected to the first rectifier diode and the second rectifier diode.

[0013] Preferably, the power supply voltage input unit includes a 24V power input port and a first electrolytic capacitor; wherein the first electrolytic capacitor is grounded.

[0014] Preferably, the electrolytic capacitor energy storage unit includes a second electrolytic capacitor and a third electrolytic capacitor connected in series;

[0015] The second electrolytic capacitor and the third electrolytic capacitor are electrically connected to the negative terminal of the first rectifier diode.

[0016] The other end of the second electrolytic capacitor is electrically connected to the second port, and the other end of the second electrolytic capacitor is also grounded.

[0017] The third electrolytic capacitor is electrically connected to the negative terminal of the second rectifier diode.

[0018] Preferably, the energy storage capacitor voltage sampling unit includes a second resistor, a third resistor, and a fourth resistor connected in series.

[0019] The other end of the second resistor is connected to the negative terminal of the first rectifier diode;

[0020] The third and fourth resistors are electrically connected to the second port;

[0021] The other end of the fourth resistor is electrically connected to the second port.

[0022] Preferably, the series voltage regulator unit includes a fifth resistor and a Zener diode connected in series;

[0023] The other end of the fifth resistor is electrically connected to the first rectifier diode through an isolation transistor;

[0024] The other end of the Zener diode is electrically connected to the second port.

[0025] Preferably, the trigger unit includes a thyristor, a second ceramic capacitor, and a trigger.

[0026] The cathode of the thyristor is electrically connected to the second port;

[0027] The anode of the thyristor is electrically connected to the input terminal of the trigger via a second ceramic capacitor, and the other input terminal of the trigger is electrically connected to the second port.

[0028] The control electrode of the thyristor is electrically connected to the third port.

[0029] Preferably, the trigger voltage enhancement unit includes a sixth resistor, a first ceramic capacitor, and a fourth diode D4 connected in series;

[0030] The other end of the sixth resistor is connected between the anode of the thyristor and the second ceramic capacitor.

[0031] The first ceramic capacitor and the fourth diode are electrically connected to the negative terminal of the xenon lamp.

[0032] The beneficial effects of this utility model are as follows:

[0033] This invention enhances the triggering flash of xenon lamps, solving the problem of failure to trigger the flash due to inconsistent manufacturing parameters of xenon lamps.

[0034] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0035] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0036] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0037] In the attached diagram:

[0038] Figure 1 This is a structural diagram of a high-pulse light triggering circuit according to an embodiment of the present invention;

[0039] Figure 2 This is a circuit diagram of a high-pulse light triggering method in an embodiment of the present invention;

[0040] Figure 3 This is a structural diagram of a high-pulse light triggering circuit in the prior art, as described in this utility model embodiment. Detailed Implementation

[0041] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a circuit for triggering strong pulse light. In actual implementation: the 24V power supply voltage input provides power to the PWM chopper boost unit. The third port P12 pin of the MCU control unit is high level to enable the PWM chopper boost unit. The PWM chopper boost unit charges the electrolytic capacitor energy storage unit. The P11 pin of the MCU control unit monitors the energy storage voltage of the electrolytic capacitor through the energy storage capacitor voltage sampling unit.

[0043] When the monitored electrolytic capacitor's energy storage voltage reaches its maximum voltage, the P12 pin of the MCU control unit goes low to shut down the PWM chopper boost unit.

[0044] The isolation unit diode D3 isolates the voltage of the second electrolytic capacitor E2 and the third electrolytic capacitor E3. The energy stored in the electrolytic capacitors is supplied to the positive terminal of the xenon lamp and also to the series voltage regulator unit. The fifth resistor R5 (the fifth resistor R5 is a current limiting resistor) and the voltage regulator diode ZD1 form a circuit.

[0045] One path of the voltage output from the Zener diode forms a circuit through capacitor C2 and trigger T2, while the other path of the Zener diode output forms a circuit through the sixth resistor R6 (which acts as a current-limiting resistor), the first ceramic capacitor C1, and the fourth diode D4.

[0046] When the first port P10 pin of the MCU control unit outputs a pulse signal, the sixth resistor R6 of the voltage enhancement unit (the sixth resistor R6 is a current limiting resistor), the first ceramic capacitor C1, the fourth diode D4, and the thyristor Q2 form a circuit, and one end of the first ceramic capacitor C1 generates a negative pulse, which is at the negative terminal of the xenon lamp.

[0047] When the first port P10 pin of the MCU control unit outputs a pulse signal, the thyristor Q2 of the trigger unit is turned on. The second ceramic capacitor C2, the thyristor Q2, and the primary side of the trigger T2 form a circuit. One end of the capacitor C2 generates a negative pulse. The negative pulse is boosted by the trigger T2 to generate a negative high voltage pulse to trigger the trigger electrode of the xenon lamp.

[0048] At this moment, the xenon lamp is triggered by the negative high voltage to the trigger electrode, and the internal gas pressure of the xenon lamp is ionized and broken down. At this time, because the negative terminal of the xenon lamp is connected to the negative pulse voltage, the conduction speed of the xenon lamp is enhanced, and the xenon lamp quickly conducts and emits strong light.

[0049] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A circuit triggered by a strong pulsed light, characterized in that, include: The MCU control unit includes a first port P10, a second port P11, and a third port P12; Among them, the first port P10 is electrically connected to the PWM chopper boost unit, the electrolytic capacitor energy storage unit, the energy storage capacitor voltage sampling unit and the trigger unit respectively. The PWM chopper boost unit is connected to the voltage input unit and is electrically connected to the electrolytic capacitor energy storage unit. The electrolytic capacitor energy storage unit is connected to the energy storage capacitor voltage sampling unit, the series voltage stabilizing unit and the xenon lamp respectively. The energy storage capacitor voltage sampling unit is also electrically connected to the second port P11. The third port P12 is electrically connected to the trigger unit, which is electrically connected to the negative terminal of the xenon lamp through the trigger voltage enhancement unit. The trigger electrode of the xenon lamp is also electrically connected to the transformer terminal of the trigger unit.

2. The circuit for enhancing pulsed light triggering as described in claim 1, characterized in that, The PWM chopper boost unit consists of a PWM signal chip IC1, a first MOSFET Q1, a current sensing resistor R1, a first boost transformer T1A, a first rectifier diode D1, and a second rectifier diode D2. The input port of the PWM signal chip IC1 is connected to the first port, the output port of the PWM signal chip IC1 is connected to the gate of the first MOS transistor Q1, the source of the first MOS transistor Q1 is connected to one output terminal of the first boost transformer T1A and the second port P12 through the current sensing resistor R1, and the drain of the first MOS transistor Q1 is connected to one input terminal of the first boost transformer T1A. The other input terminal of the first step-up transformer T1A is connected to the power supply voltage input unit; The other output terminal of the first step-up transformer T1A is connected to the second step-up transformer T1B. The two ends of the second step-up transformer T1B are respectively connected to the first rectifier diode D1 and the second rectifier diode D2.

3. The circuit for enhancing pulsed light triggering as described in claim 2, characterized in that, The power supply voltage input unit includes a 24V power input port and a first electrolytic capacitor E1; wherein, the first electrolytic capacitor E1 is grounded.

4. The circuit for enhancing pulsed light triggering as described in claim 1, characterized in that, The electrolytic capacitor energy storage unit includes a second electrolytic capacitor E2 and a third electrolytic capacitor E3 connected in series. Among them, the second electrolytic capacitor E2 and the third electrolytic capacitor E3 are electrically connected to the negative terminal of the first rectifier diode D1. The other end of the second electrolytic capacitor E2 is electrically connected to the second port P11, and the other end of the second electrolytic capacitor E2 is also grounded. The third electrolytic capacitor E3 is electrically connected to the negative terminal of the second rectifier diode D2.

5. The circuit for enhancing pulsed light triggering as described in claim 1, characterized in that, The energy storage capacitor voltage sampling unit includes a second resistor R2, a third resistor R3, and a fourth resistor R4 connected in series. The other end of the second resistor R2 is connected to the negative terminal of the first rectifier diode D1; The third resistor R3 and the fourth resistor R4 are electrically connected to the second port P11; The other end of the fourth resistor R4 is electrically connected to the second port P11.

6. The circuit for enhancing pulsed light triggering as described in claim 1, characterized in that, The series voltage regulator unit includes a fifth resistor R5 and a Zener diode ZD1 connected in series; Among them, the other end of the fifth resistor R5 is electrically connected to the first rectifier diode D1 through the isolation transistor D3; The other end of the Zener diode ZD1 is electrically connected to the second port P11.

7. The circuit for enhancing pulsed light triggering as described in claim 1, characterized in that, The trigger unit includes a thyristor Q2, a second ceramic capacitor C2, and a trigger T2; The cathode of the thyristor Q2 is electrically connected to the second port P11; The anode of the thyristor Q2 is electrically connected to the input terminal of the trigger T2 through the second ceramic capacitor C2, and the other input terminal of the trigger T2 is electrically connected to the second port P11. The control electrode of the thyristor Q2 is electrically connected to the third port P12.

8. The circuit for enhancing pulsed light triggering as described in claim 1, characterized in that, The trigger voltage enhancement unit includes a sixth resistor R6, a first ceramic capacitor C1, and a fourth diode D4 connected in series. The other end of the sixth resistor R6 is connected between the anode of the thyristor Q2 and the second ceramic capacitor C2. The first ceramic capacitor C1 and the fourth diode D4 are electrically connected to the negative terminal of the xenon lamp.

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